AS9197 BECOMGMBH-AS Germany, D-35578 Wetzlar

AS9197 (BECOMGMBH-AS) is held by becom Systemhaus, an IT systems house and business connectivity provider based in Wetzlar, Hesse — the registry description still carries the old D-35578 Wetzlar postal line. becom builds and manages network and security infrastructure for companies, and sells business internet, SD-WAN and managed firewall/monitoring services on top of it.

What it's used for

RIS sees 5 IPv4 prefixes covering 4,608 addresses, 4 IPv6 prefixes, and 2 observed BGP neighbours. The IPv4 side is one coherent block, 195.226.64.0/20, with a few more-specifics (195.226.80.0/23, 195.226.65.0/24, 195.226.81.0/24, 195.226.76.0/24) punched out of the surrounding range. Two neighbours means becom is a dual-homed customer of larger carriers, buying resilient transit and reselling connectivity — a regional business ISP, not a wholesale carrier.

The reverse DNS is the most informative part of the pack, and it shows the space is carrying customers, not just becom itself. 195.226.81.5 and 195.226.81.133 resolve to smtpex02.ekom21.de and ns4.ekom21.de — ekom21 is a Hessian municipal IT service provider. 195.226.76.5 is mail.diventus.de, another third-party company. Only 195.226.65.133 (mrpostman.becomsys.de) is becom's own. That mix — customer mail servers and nameservers sitting on individually-announced /24s inside the provider's /20 — is precisely how a small business ISP numbers managed-hosting and dedicated-connectivity clients.

Notable

• The IPv6 footprint is disproportionately large for the IPv4 size: a 2a02:998::/32 plus sub-prefixes and two blocks from 2a02:1010::/xx.
• The customer domains in rDNS include public-sector IT (a municipal service provider), so the AS carries more than SME web hosting.